Window lock



u S. MINER WINDOW LOCK Filed June 17, 1925 Patented July 13, 1926.

UNITED STATES ATENT SAMUEL MINER, or CHICAGO, ILLINOIS.

WINDOW LOCK.

Application vfiled. June 17, 1925. Serial No. 37,741.

This invention relates to window securing devices and has for its particular object the provision, in a manner as hereinafter set forth, a latching device designed toenable one to leave the window sash open a slight distance but preventing any unauthorized person from opening the window further, from the outside, to gain entrance through the window.

The invention contemplates the provision of a device adapted to be secured at any desired point to the frame of a top window sash and this device has a spring controlled swinging arm which may be projected outwardly from the sash and at right angles thereto, to prevent the lower sash from be ing removed beyond the point upon which the latch is fixed to the upper sash. The arm may be swung upwardly out of position so that it will not interfere with the normal operation ofthe top and bottom sash when it is desired to openthe window from the inside, to its full extent.

A further and final object of this invention is the provision, in a manner as hereinafter set forth, of a sash latching device of neat appearance, strong and durable, inex pensive to manufacture, and readily placed into position.v V I The invention will be best understood from a consideration of the follo ing detailed description taken in connection with the accompanying drawing forming a part of this specification with the understanding that the invention is not confined to any strict conformity with the showing of the drawing but may be changed and modified so long as such changes and modifications mark no material departure from the salient fca tures ofthe invention as expressed in the appended claim.

In the drawinw- Figure 1 is a sectional view taken longitudinally through the upper and lower sash of a Window, at the central portion thereof, and showing in side elevation the device embodying this invention fixed to the upper sash.

Figure 2 is a View similar to that of Figure 1 but showing the deviceembodying this invention in inoperative position to allow one sash to be moved past the other as indicated by the position of the sashes.

Figure 3 is a horizontal section through the side of the upper sash and through the securing plate of the device embodying this invention, showing the manner in which the invention is secured to the window.

Figure t is horizontal section taken hrouplh the device embodying this invention while in the position shown in Figure 1.- Figure 5 isa section taken upon the line 5-5 of Figure a and, t

Figure 6 is a detailed perspective View of the securing plates by means of which the device is held to the window sash.

Referring now't-o the drawing in detail wherein like numerals of reference indicate corresponding parts throughout the severe.

views, there is indicated by the numeral 1 an upper window sash and'by the'numeral 2 a lowerwindow sash.

T he device embodying this inventioncomprises anangle plate indicated generally by the numeral 3, this'plate comprising a front portion aand a side portion 5. Each of the portions 4; and 5 are provided with the apertures 6 for the passage of securing screws as shown in Figures 1, 2 and '3 by the nnn'ieral 7. 1

The portion 5 of the plate 3 has its free longitudinal edge provided with a pair of right angledfla nges 9, these flanges having their inner ends in spaced-relation as indicated-at '10, which'space occurs in alignment with the aperture 8, transversely of the portion 5 as shown in Figure 6. g

The plate portiono further has a portion cut therefrom and extended at right angles thereto and in parallel relation with the portion l to set up the stop tongue 11. This tongue is at the point of joinder between the two portions and is invthe Same plane with the portion 4 and below the space 10 formed between the ends of the flanges 9. I

Working in conjunction with the plate 3, against the face of the portion 5 is an elongated sash stop member indicated generally by the numeral 12. This stop member has a surrounding flange 13 upon the inner face thereof thereby making the inner face hollow as clearly shown in Figure 5.

One end of the'member 12 has extending therefrom upon the longitudinal center thereof a linger 1 1, and adjacent this finger and upon the longitudinal center of the member 12 is an elongated slot 15. When the member 12 is in position about the portion 5, the inner or hollow side thereof is toward the member 5 and theslot 15 is in alignment with the aperture 8 in the portion 5. There is then passed through the aperture 8 in the slot 15 a securing pivot pin 16, and within the hollow of the member 12 is a. spring 17 one arm of which is located in the finger 14: as indicated at 18 and the other arm 19 bears against the pivot pin 16 as shown.

When the member 12 is in the position shown in Figure 1, that is transversely of the plate portion 5 to prevent the raising of the lower sash 2 or the lowering of the upper sash 1, the spring 17 acts to project the member 12 forward causing the finger 14 to engage in the opening 10 between the flanges 9. The lower edge of the sash stop member 12 then rests upon the supporting stop tongue 11. As will be clearly seen any eforts'to raise the sash 2 when thedevice is in this position, as shown in Figure 1, will be stopped by the sash contacting with the underside of the extended free end of the stop member 12. The member is prevented from being turned upwardly by the finger let engaging between the ends of the flanges 9 as shown. lVhen the sash is to be released by the device, themember 12 is drawn outwardly against the tension of the spring 17 to disengage the finger 14 from between the flanges 9 and is then swung upwardly to the position, as shown in Figure 2, placing the stop 12 in alignment with the plate portion 5. The stop 12 as shown is of less width than the plate portion 5 and when turned in the position shown in Figure 2 the top and bottom edges of the stop 12 are inside of the side edges of the plate portion 5 and therefore do not interfere with the passage of the sash across the side of the plate portion.

From the foregoing description it will be readily seen that there has been provided a neat and novel as well as serviceable window securing device, which is quickly and easily manipulated and serves to positively prevent any movement of either of the upper or lower sash of the window beyond the point set by the device.

Having thus described my invention what I claim is A window lock, comprising a base plate adapted to be secured to the vertical side rail of an upper window sash, a notched flange bent from the free edge of the plate to lie parallel with the glass panel of said sash, a tongue out and bent outwardly from the plate in parallel relation to the flange and below the notch therein, an elongated member swingingly supported against the base of said plate to be moved from vertical to horizontal position against the tongue and having a finger at one end to detachably engage in the notch when said member is in horizontal position, and further having a relatively short longitudinally extending slot formed therein adjacent said finger, a pivot pin on the plate and received in the slot to limit the movement of said member, an inturned surrounding flange formed integral with said member, and bearing against said plate, forming the said member with, a hollow inner space, and a spring housed within said hollow space and active against the member to maintain the member in horizontal Or vertical position as desired.

In testimony whereof, I afflx my signature hereto.

SAMUEL MINER. 

